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April 17, 2021 at 4:20:17 AM

Design Analysis of Low-Pressure Acetylene
Generators used in Chhattisgarh State

The Low-Pressure Acetylene Generators used calcium carbide to generate
Acetylene gas. The generated low-pressure Acetylene is used with an oxygen
cylinder extensively by Gas welders in Chhattisgarh state for oxy acetylene
welding. This low-pressure oxy acetylene welding is used mostly in
automobile body repairing work. In this research paper mainly four types of
popular generators are used to study for producing low-pressure Acetylene.
The design construction and working of these lookalike generators are
similar but their capacities and safety to hold the Acetylene gas are different.
These generators are selected by the gas welders as per the experience and
skill developed by them. The safety features in these low-pressure acetylene
generators are rarely followed by the gas welders in the state. These Lowpressure Acetylene generators are preferred over the Acetylene cylinder due
to low-cost Acetylene generation. In this research paper with help of CAD
modeling these four popular Acetylene generators design and the capacity of
each generator are calculated. In these four types of low-pressure acetylene
generation, prefabricated generators are found safest to operate and the Top
charged Acetylene Generator is found unsafe and required very high skill of
operation. These design analysis study of these popular models will certainly
help to standardize the dimensions of the Acetylene generators for their safe

Material Science Letters



The Acetylene generators are used along with oxygen cylinders to weld and repair automobiles quit extensively in
Chhattisgarh state. These generators are used Calcium Carbide with water to produce the Acetylene gas. This type of
welding is considered as low pressure welding where welding pressure is required only 0.1 bar [1]. This type of
Acetylene generation is used with Oxygen in auto body minor repairing [2]. Other than automotive repair low
pressure gas welding is also used for joining of thin ferrous and non ferrous materials, air craft industries and sheet
metal, fabrication plant [3]. Generally 16 gauges to 22 gauges mild steel sheets are welded using theses generators
[2]. The dimensions of all the popular generators are gathered from the 11 District of Chhattisgarh. They are Raipur,
Durg, Rajnadgaon, Balod, Dhamtari, Kanker, Kondagaon, Jagadalpur, Sukma, Dantewada, Bijapur and Narayanpur.
As per BIS (Bureau of Indian Standards) SP: 12-1975 Handbook of Gas Welders the Low pressure Acetylene generators
are divided as Water to Carbide and Carbide to Water [4]. But these classification are little confusing to exactly
naming the generators. These generators can be clearly classified further as [5]-
1. Pre-fabricated Acetylene generators.
2. Fabricated Acetylene generators.
A) Open Dome type
B) Submerged Dome type
C) Top charging type
There are few more popular models are used in these classification. But the Analysis is done on only those
which can hold the maximum calcium carbide (CaC2). Almost all the generators are made with mild steel sheet of 16
gauges (1.5189 mm).



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